Optimal control of heavy haul train on steep downward slope

2016 ◽  
Author(s):  
Xi Wang ◽  
Tao Tang
Keyword(s):  
Optimal Control ◽  
Heavy Haul Train ◽  
Heavy Haul ◽  
Downward Slope

Pseudospectral Real-Time Optimal Energy Control with Safety Constraints for Heavy-Haul Trains

2017 ◽  
Vol 21 (2) ◽  
pp. 258-265
Author(s):  
Rui Zhang ◽  
◽  
Jun Peng ◽  
Bin Chen ◽  
Hongtao Liao ◽  
...  
Keyword(s):  
Optimal Control ◽  
Real Time ◽  
Closed Loop ◽  
Pseudospectral Method ◽  
Heavy Haul Train ◽  
Heavy Haul ◽  
Time Optimal ◽  
Safety Constraints ◽  
Heavy Haul Trains ◽  
Control Principle

Heavy-haul trains must be energy-efficient and safe during their operations. Owing to the multidimensional high-order nonlinear characteristic of heavy-haul trains, which include numerous cars, this paper proposes a uniform pseudospectral real-time closed-loop optimal control framework to minimize the energy consumption with control inputs and state constraints based on the Radau Pseudospectral Method (RPM). In the framework, in order to ensure safe running of the heavy-haul train, the desired in-train force and speed limit requirements are formulated as constraints of optimal control. Simultaneously, a constrained closed-loop optimal control is constructed by using the receding horizon control principle and pseudospectral observer, in which RPM is leveraged to obtain real-time optimal solutions. The effectiveness of the proposed approach is verified from simulation results.

scholarly journals Establishment and Analysis of Energy Consumption Model of Heavy-Haul Train on Large Long Slope

Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 965 ◽  
Author(s):  
Qiwei Lu ◽  
Bangbang He ◽  
Mingzhe Wu ◽  
Zhichun Zhang ◽  
Jiantao Luo ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Heavy Haul Train ◽  
Energy Consumption Model ◽  
Heavy Haul ◽  
Consumption Model

Experimental research on the dynamic response characteristics of the transition subgrade induced by heavy-haul train passage

2019 ◽  
Vol 233 (9) ◽  
pp. 974-987 ◽  
Author(s):  
Huihao Mei ◽  
Wuming Leng ◽  
Rusong Nie ◽  
Renpan Tu ◽  
Yafeng Li ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Repeated Loading ◽  
Moving Loads ◽  
Response Characteristics ◽  
Heavy Haul Train ◽  
Condition Evaluation ◽  
Heavy Haul ◽  
Variation Characteristics ◽  
Heavy Haul Railway ◽  
Moving Train

The dynamic response of the subgrade under moving train loads provides information on subgrade settlement prediction, condition evaluation, and so forth. This paper presents the field dynamics tests on the transition subgrade in the Shuo-Huang heavy-haul railway in China. The variation characteristics of the peak dynamic displacements along the track and subgrade slope were analyzed, and the random distribution characteristics of the peak dynamic displacements at the subgrade shoulder were studied. The response characteristics of the subgrade during the train passage were investigated, and the attenuation regularities of vibration along the subgrade slope were identified. The results indicated that the action of the train moving loads on the subgrade has obvious periodicity, and two bogies in the adjacent wagons should be considered as one loading unit. The peak dynamic displacements at the subgrade shoulder obey normal distribution under the repeated loading of the loading unit. The subgrade bed is dramatically influenced by the dynamic loadings of the trains, and the moving train loads have little influence on the part below the subgrade bed. The results of the research provide the basis for the evaluation of instantaneous and long-term dynamic stability of the subgrade and offer guidance for simulating train moving loads in the model test and numerical analysis to study the dynamic response of the subgrade.

scholarly journals A neural network driving curve generation method for the heavy-haul train

2016 ◽  
Vol 8 (5) ◽  
pp. 168781401664788 ◽  
Author(s):  
Youneng Huang ◽  
Litian Tan ◽  
Lei Chen ◽  
Tao Tang
Keyword(s):  
Neural Network ◽  
Heavy Haul Train ◽  
Heavy Haul
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